FIELD: acoustics.
SUBSTANCE: invention relates to industrial acoustics and can be used for machine drive noise reduction, lining of manufacturing facilities and in other sound-absorbing structures. Stand for testing acoustic characteristics of sound absorbing elements in industrial premises comprises a test object that is installed freely on the floor in a premises, and at five measurement points, along the perimeter of the test object, at a distance of 1 m from its overall dimensions, acoustic microphones from the acoustic equipment set that meets the requirements for measuring complexes are installed, the number of measurement points is five, and the number of measurements at each point is three, after measurements the noise characteristics of the object are calculated according to certain mathematical expressions.
EFFECT: technical result consists in increasing the efficiency of sound attenuation and the reliability of the structure as a whole.
1 cl, 5 dwg, 3 tbl
